package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.JSON;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.OrderSpuInfoVo;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignClient;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private SpuImagesService spuImagesService;

    @Autowired
    private AttrService attrService;

    @Autowired
    private ProductAttrValueService productAttrValueService;

    @Autowired
    private SkuInfoService skuInfoService;

    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    private CouponFeignClient couponFeignClient;

    @Autowired
    private BrandService brandService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private WareFeignService wareFeignService;

    @Autowired
    private SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        // 1、保存spu基本信息; pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.save(spuInfoEntity);

        // 2、保存spu的描述图片; pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.save(descEntity);

        // 3、保存spu的图片集; pms_spu_images
        List<String> images = vo.getImages();
        if (!CollectionUtils.isEmpty(images)) {
            List<SpuImagesEntity> collect = images.stream().map(img -> {
                SpuImagesEntity spuImagesEntity = new SpuImagesEntity();
                spuImagesEntity.setSpuId(spuInfoEntity.getId());
                spuImagesEntity.setImgUrl(img);
                return spuImagesEntity;
            }).collect(Collectors.toList());
            spuImagesService.saveBatch(collect);
        }

        // 4、保存spu的规格参数; pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        if (!CollectionUtils.isEmpty(baseAttrs)) {
            List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
                ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
                valueEntity.setAttrId(attr.getAttrId());
                AttrEntity attrEntity = attrService.getById(attr.getAttrId());
                valueEntity.setAttrName(attrEntity.getAttrName());
                valueEntity.setAttrValue(attr.getAttrValues());
                valueEntity.setQuickShow(attr.getShowDesc());
                valueEntity.setSpuId(spuInfoEntity.getId());
                return valueEntity;
            }).collect(Collectors.toList());
            productAttrValueService.saveBatch(collect);
        }

        // 5、保存spu的积分信息：gulimall_sms --> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignClient.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败。");
        }


        // 6、保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (!CollectionUtils.isEmpty(skus)) {
            skus.forEach(item -> {
                // 6.1）、sku的基本信息; pms_sku_info
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1) {
                        defaultImg = image.getImgUrl();
                    }
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item, skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.save(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();
                // 6.2）、sku的图片信息; pms_sku_images
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity -> {
                    // 仅保存有内容的图片路径
                    return StringUtils.hasText(entity.getImgUrl());
                }).collect(Collectors.toList());
                skuImagesService.saveBatch(imagesEntities);

                // 6.3）、sku的销售属性信息; pms_sku_sale_attr_value
                List<SkuSaleAttrValueEntity> attrValueEntities = item.getAttr().stream().map(attr -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(attr, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(attrValueEntities);

                // 6.4）、sku的优惠、满减等信息; gulimall_sms --> sms_sku_ladder/sms_sku_full_reduction/sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1) {
                    R result = couponFeignClient.saveSkuReduction(skuReductionTo);
                    if (result.getCode() != 0) {
                        log.error("远程保存spu优惠信息失败。");
                    }
                }
            });
        }
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> queryWrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (StringUtils.hasText(key)) {
            queryWrapper.and(w -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (StringUtils.hasText(status)) {
            queryWrapper.eq("publish_status", status);
        }
        String brandId = (String) params.get("brandId");
        if (StringUtils.hasText(brandId) && !"0".equals(brandId)) {
            queryWrapper.eq("brand_id", brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (StringUtils.hasText(catelogId) && !"0".equals(catelogId)) {
            queryWrapper.eq("catelog_id", catelogId);
        }
        IPage<SpuInfoEntity> page = this.page(new Query<SpuInfoEntity>().getPage(params), queryWrapper);
        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        // 组装需要的数据
        // 1、查出当前spuId对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        // 查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        // 发起远程调用，统一查询库存系统中对应商品是否有库存
        List<Long> skuIds = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        Map<Long, Boolean> stockMap = new HashMap<>();
        try {
            R r = wareFeignService.getSkusHasStock(skuIds);
            List vos = (List) r.get("data");
            vos.forEach(item -> {
                SkuHasStockVo vo = JSON.parseObject(JSON.toJSONString(item), SkuHasStockVo.class);
                stockMap.put(vo.getSkuId(), vo.getHasStock());
            });
        } catch (Exception e) {
            log.error("库存服务查询异常，原因{}", e);
        }
        // 2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> uoProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            // 设置商品库存信息
            if (finalStockMap != null) {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            } else {
                esModel.setHasStock(false);
            }
            // TODO: 热度评分，暂时先统一设置为0
            esModel.setHotScore(0L);
            // 查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());
            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());
            // 设置检索属性
            esModel.setAttrs(attrsList);
            return esModel;
        }).collect(Collectors.toList());
        // 将数据发送给es进行保存：gulimall-search
        R r = searchFeignService.productStatusUp(uoProducts);
        if (r.getCode() == 0) {
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            // 远程调用失败
            // TODO 重复调用？接口幂等性；重试机制？......
        }
    }

    @Override
    public OrderSpuInfoVo getSpuInfoBySkuId(Long skuId) {
        OrderSpuInfoVo spuInfoVo = new OrderSpuInfoVo();
        SkuInfoEntity skuInfo = skuInfoService.getById(skuId);
        SpuInfoEntity spuInfo = this.getById(skuInfo.getSpuId());
        spuInfoVo.setSpuId(spuInfo.getId());
        spuInfoVo.setSpuName(spuInfo.getSpuName());
        spuInfoVo.setCategoryId(spuInfo.getCatalogId());
        BrandEntity brand = brandService.getById(spuInfo.getBrandId());
        spuInfoVo.setSpuBrand(brand.getName());
        // todo: spu图片先不传
        return spuInfoVo;
    }

}